Even with a clever choice of initial variables, it could be that the guiding principle is not powerful enough to provide meaningful representations for all physical situations. This is likely the case in both approaches, which are still rooted in classical intuitions — resulting in concepts like agents, Reichenbach's principle, and time order.
In trying to explain a physical scenario in terms of these classical notions, we risk running into paradoxes such as the inconsistencies between quantum agents in [1]}. It remains to explore whether both our approach and causal models can handle this kind of physical challenges, and whether extensions to cover them would still be intuitive enough to help us make sense of the world.
